Loom-harness evener.



PATENTED OCT. 11, 1904.

E. H. RYON. LOOM HARNESS BVBNER.

APPLICATION FILED MAY 5, 1904.

2 SHEETS- SHEET 1.

N0 MODEL.

CMM/www No. 772,180. PATENTED OCT. 11, 1904. E. H. RYON.

LOOM HARNESS EVBNBR.

APPLOATION FILED MAY 5, 1904.

N0 MODEL. 2 SHEETS-SHEET 2.

No. 772,180. n

UNITED STATES EPPA H. EYoN,

oEoMPToN a KNowLES MASSACHUSETTS.

Patented october 11, 1904.

PATENT OEEICE.

Loom-HARNESS EVENER.'

SPECIFICATION forming part of Letters Patent No. 772,180, dated October 11, 1904. Application filed May 5,1904. Serial No. 206,468. (No model.)

dobby mechanism of a loom for evening all the harnesses or lowering all the harnesses which are notl 1n their lowered position when the loom is stopped forany purpose.

The object of my invention is to provide a loom-harness evenei` of simple construction and which can be readily combined with or applied to the dobby mechanism of a loom of ordinary construction and operation.

My invention consists in certain novel features of construction of my improvements, as will be hereinafter fully described.

I have only shown in the drawings suflicient parts of a dobby mechanism of ordinary construction with my improvements combined therewith to enable those skilled in the art to which my invention belongs to make and use the same.

vReferring to the drawings, Figure 1 is a side or front view of theparts of a dobby mechanism with my improvements applied thereto and showing detached parts of two harness-frames connected to their harness levers or jacks. Figi 2 corresponds to Fig. 1, but Shows the opposite position of some of the parts of the mechanism. Fig. 3 is, on an enlarged scale, an end view of the parts Shown in Fig. 1 looking in the direction of arrow a, same figure, and showing some additional parts; and Eig. 4 is a sectional detail taken at a point indicated by line 4 4, Fig. 2, looking in' the direction of arrow Z), same figure.

In the accompanying drawings, 1 represents the side frames of a dobby mechanism attached to the loom-arch. (Not shown.)

2 and 3 are'two harnesses each connected by a cord 4, passing over a sheave 5, with one of the harness levers or jacks 6 and' 7. The

harness-levers 6 and 7 are pivoted at their lower ends on a transverse rod 8. A connector 9 is centrally pivoted on each harness-jack 6 and7 and has pivotally connected to each end a hook-jack 10 and 11, which are adapted to engage the lifter-bars 12 and 13, which are supported and move in slots 1 inA the side frames 1. The lifter-bars 12 and 13 are connected at each end by, links or connectors 14 with the rock-lever 15, fast on the rocker-lever shaft 16, to which rotary motion is conimunicated in the ordinary way. The movement of the liook-j acks 10 and 11 to engage with or be disengaged from the lifter-bars 12 and 13 is controlled bythe ordinary pattern mechanism (not shown) through indicator levers or fingers 12 and lifter-wires 13 (shown in Eig. 3) in the ordinary way.

All of the above-mentioned parts may be of the ordinary construction except the rockerlever 151 T will now describe my improvements for evening the harnesses. The rocker-lever 15 instead of being made in one part in the ordinary way is made in two parts. part 15 is fast on the rocker-lever shaft 16 and has an extension 15" above the shaft 16, preferably of segmental Shapeas shown, with a projection 15 thereon. The other part, 15", of the lever 15 is loosely mounted on the rocker-shaft 16. On a stud 17 a (see Fig. 4) is pivotally mounted a latch 17, the free end 17 of which is adapted to catch over the projecting end 15'", as shown in Eig. 1, to lock the part 15"l to the part 15 and cause them to move together as one lever. A shoulder 17 on the latch 17 extends over the upper curved edge of the segmental portion 15 of the part 15', and when said latch is disengaged from the projecting end 15' the shoulder 17 will be in frictional engagement with the upper edge of the segmental portion 15, as Shown in Fig. 4, and act to regulate the movement thereof. On the latch 17 is a projecting arm 17', in this instance extending at right angles to the latch 17. The end of the arm 17' is connected by a link 18 to an arm 19, fast on( the transverse shaft 20, mounted to rock in The lower bearings 2O on the rocker-lever arm 15. Also fast on one end of the shaft 2O is an arm 21, which has attached to its free end a cord or wire 22, extending lengthwise across the loom. It will be understood that the parts shown in Figs. 1 and 2 and above described are duplicated on the other side or end of the dobby, as shown in Fig. 3, except the arm 21 and the wire 22. On the rocker-shaft 2O is coiled a spiral spring 23, one end of which is fast to a collar 24, attached to said shaft, in this instance by a screw 24. (See Fig. 3.) The other end of the spring 23 is secured to one of the bearings 20.

The operation of my improvements will be readily understood from the above description in connection with the drawings. When it is desired to even the harnesses or to lower those that are in their raised position, the arm 21 on the rock-shaft 2O is moved in the direction of arrow c, Fig. 1, by pulling the wire 22. This movement of the arm 21 will rock the shaft 2O and move down the arms 19, fast thereon, and through link 18 move the arm 17 of the latch 17 on its pivotal support to release the hook end of the latch from the projection 15' on the segmental upper end 15 of the arm 15 of the rock-lever and allow the upper part 15 of the rock-lever and the lifter-bar 12, which is connected to said arm by connectors 14, to move to their eXtreme inward position, as shown in Fig. 2, and allow the upper hook-jacks 10 to move with them, and the jack-levers connected therewith move to their inward position, and the harnesses connected with said jacl -levers move to their lowered position, all as shown in Fig. 2. After the latch 17 is released from engagement with the projecting end 15' on the segmental part 15 by the movement of the wire 22 the shoulder 17 on said latchwill engage with the upper edge of said segmental part 15, and the attendant by holding the wire 22 can regulate the friction between said shoulder and said segmental part so as to cause a slow movement of the part 15" and the consequent slow downward movement of the harnesses. When the loom is started, the lower arm 15' of the rock-lever 15 will move the lower lifter-bar 13 outwardly, and the upper segmental end 15 of the arm 15 will move inwardly until the projecting end 15' is in position to be engaged by the hook-latch 17. The spiral spring 23 will then act to rotate the rock-shaft 20 and through arm 19, link 18, and arm 17 on the latch 17 will rock said latch and cause the end thereof to move over the projecting end 15 on the segmental portion 15 of the arm 15 to cause the part 15 of the rocker-lever to be attached to the part 15', as shown in Fig. 1, and to move with said part on the rocking motion of the rockershaft 16.

It will be understood that the details of construction of my improvements may be varied, if desired.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a dobby mechanism, a rock-shaft, a rocker-lever for operating the lifter-bars, made in two parts, one fast on said rock-shaft, and the other loose, and means to connect the two parts to cause them to move together, and to disconnect them to allow one part to move independently of the other, substantially as shown and described.

2. In a loom-harness evener, the combination with the harnesses, connections to the harness-levers, and said levers, the connectors on said levers, the hookjacks intermediate said connectors and the lifter-bars, and said lifter-bars, and connectors to the rocker-lever on a rock-shaft, and said rock-shaft, of said rocker-lever made in two parts, one fast on said rock-shaft and the other loose, and means to connect the two parts to cause them to move together, and to disconnect them to allow one part to move independently of the other, substantially as shown and described.

3. In a loom-harness evener, the combination with the harness-levers, connections to the harness-levers, and said levers, the connectors on said levers, the hook-jacks, intermediate said connectors and the lifter-bars, and said lifter-bars, and connectors to the rocker-lever on a rock-shaft, and said rockshaft, of said rocker-lever made in two parts, one fast on said rock-shaft and the other loose, and a latch on the loose part adapted to engage the other part, a cord or wire, and connections intermediate said cord or wire and the latch, to operate the same, substantially as shown and described.

4. In a dobby mechanism, a rock-shaft, a rocker-lever for operating the lifterbars, made in two parts, one fast on said rock-shaft, and the other loose, and means to connect the two parts to cause them to move together, and to disconnect them to allow one part to move independently of the other, and means to control the movement of one part, substantially as shown and described.

EPPA H. RYON.

Witnesses:

JOHN C. DEWEY, MINNA HAAs.

ICO

IIO 

